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* C. E. WILLIAMS 8u J. CARR.

INGUBATOR. No. 334,073. Patented May 31, 1337.

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' y Inv-enfer ip sglm- I UNITED STATES PATENT OFFICE.

CHARLES E. VILLIAMS, OF FALL RIVER, MASSACHUSETTS, AND JOHN F.

GARR, OF TIVERTON,RHODE ISLAND.

" INCUBATO R.

SPECIFICATION forming peut of Letters Patent No. 364.073, dated May 31l1887.

Application filed November 15, 18H3.. Serial No. 218.846. (Noniodol.)

To all whom it may concerlu- Be it known that we, CHARLEs E. WILLIAMS,of Fall River, in the county of Bristol, State of Massachusetts, andJOHN F. GARR, of Tiverton, inthe county of Newport, State of RhodeIsland, have invented a certain new and useful Improvement inIncubators, of which the following is a description sufficiently full,clear, and exact to enable any person skilled in the art or science towhich said invention appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure lis a vertical longitudinal sectionshowing the heating device ofour improved incubator, some of the partsbeing represented in side elevation; Fig. 2, a top plan View of thesame, and Fig. 3 a vertical transverse section.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings. I

Our invention relates more especially to that class of incubators inwhich hot Water is employed for maintaining heat in the hatchingchamber;and it consists in certain novel details of construction, as hereinafterfully set forth and claimed, the object being to produce v a moreeffective device of this character than is now in ordinary use.

i The nature and operation of the improvementwill be readily understoodby all conversant with such matters from the following explanation.

In the drawings, A represents the body or case, which is provided withthe usual airspaces or insulating-chambers, x.. A n -shaped boiler, B,is disposed in one end of the body, and provided at the top with aseries of eduction tubes or fines, C, and at the bottom withinduction-tubes H, through which the heated water circulates. A smokeflue or pipe, D, leads from the upper portion of the boiler directlythrough the side walls thereof, said pipe extending horizontally alongthe body A and opening into the chimney E.

Vertically-arranged pipes m connect the cduction-pipes C with theinduction or return pipes H, near the chimney E. A verticallyarrangedpipe, K, is connected with one of the tubes or lues C, into which itopens, said pipe being provided with a short branch pipe or nipple, z.vA flexible rubber tube, Mis attached to the nipple z, said tube beingprovided at its outer end with a cup, Z.

Bivoted at r, in the upper end of the pipe K, with its longarm securedto thecupl, there is a horizontally-arranged lever, N, provided y at oneend with a counterbalance-weight, J, and jointed at its opposite end toaverticallyarranged rod, Q. A lamp, R, -is disposed bcneath the boiler Bin such a position that the l being lighted, the water in the boiler'will be' heated and pass through the eduction-tubes C, down through thetubes m, and thence through the return-tubes H into the boiler again tobe reheated.

In case the water in the boiler becomes too hot, or the heatin theincubator too great, the water will be forced into the pipe K, andthence th ron gh thenipple z and tube M into the cup Z, the cup being soarranged that the long arm of the lever N, which is securedthereto,'will rise and fall as the cup is raised or depressed. It Willbe obvious that when the temperature rises and asufficientquantity ofwater is forced into the cup to depress it the lever will fall ac-vboiler will fall, and the water in the cup Zow v out of the same,thereby permittingthe cup and lever N to be raised by thecounterbalance-weight J, the rod Q being at the same time drawn upward,the sleeve t depressed,

` and the iiame of the lamp increased. It will therefore be seen thatthe pivoted levers N b, roo

counterbalance-Weight J, sleeve t, rod Q, pipe K, and elastic tube M,provided with the cup l, constitute adevice by which the heat orternperature of the water in the boiler` and pipes 5 is regulatedautomatically.

By constructing the boiler with the air-chamber k, and carrying the pipeD from said cham- `ber .through the body A, the heat generated by thelamp is utilized to the best advantage. lo An auxiliary spring may beused in connection with the tube M, if necessary, and the tube K beinserted directly in the boiler, instead of in the pipe C.

As our improvement relates especially to i 5 the construction andarrangement of the boiler and its pipes, and to means for automaticallygoverning the temperature of the water, it is not deemed essential toshow any other `parts oftheincubator than are represented in the 2odrawings.

end of said Ainverted-U-shaped boiler, said 5ov smoke-pipe passingthrough said case into the chimney-flue, substantially as described.

CHARLES E. VILLIAMS. JOHN F. CARR.

Vitnesscs:

O. M. SHAW, C. A. SHAW.

